These bottles come with secure sealing cap for better security and long-term storage. These bottles are used to storing and shipping reagents, chemicals, culture media, and standards. These are very strong and durable for extended use over time with a strong carrying handle. Comes with high quality and durable stopcock or tap for easy withdrawal of liquids, chemicals, reagents, culture media and standards. Can be used at temperature below 0° C. Superior chemical resistance. Suitable for use with food.